Supporting device



Au. 1 1943 w. G. LEICHNER 2326469 SUPPORTINGI DEVICE Filed April so, 1942 FIG.2 FIG.I

INVENTOR LEICHNER Patented Aug. 10, 1943 UNITED STATES PATENT OFFICE 2326469 SUPPORTING DEVICE William G. Leichner, Fort Wayne, Ind., assignor to Farnsworth Television and Radio Corporation, a comoration of Delaware Application April 30, 1942, Serial N0. 441,217

4 Claims. (C1. 24s 309) 'I'his invention relates generally to a means for supporting the circuit elements in electronic apparatus andmore particularly to supporting devlces for ch'assis-borne elements such as candensers, resistors and cils in radio circuits or public address Systems.

Electronic radio or sound reproducing equipment is frequently instailed in motor vehicles or in factory structures where excessiVe vibration and jarring motions occur. 'I'o obtain efficient operation of the circuits in this radio and sound reproducing equipment, it 1s necessary tha1; such provisions be made that the circuit connections may be maintained in substantially perfect comdition I:o eliminate failures or imperfect operation. T0 accomplish this result, ir, is essential that the circuit elements such as coils, resistors and condensers be firmly supported with respect to the main chassis er to the rack or panel equipment which is customarily used for supporting Iadio and sound amplifying equiinment. In meetfing this problem, 1't is also necessary that whatever support elements may be used should involve simple manufacturing operations, minimum quantity cf material and general economy cf producti0n.

Accordingly, the object of this inventlon is to provide a novel supporting device for electric elements such as resistors, 0011 and condensers, particularly adapted 130 withstand the effects cf vibratory and jarring motions. II: 1's a further object cf this invention to provide a suppori: of this character which costs little and 15 simple to manufactute.

F01 a better understanding of the present invention, together with other and further objects thereof, reference is had to the following description taken in connection with theaccompanying drawing and its scope will be pointed out in the appended claims.

Referring 1:0 the drawing:

Fig. 1 of the drawing is a front view cf one embodiment cf this invention illustrating a, supporting device particularly adapted to support a condenser element;

Fig. 2 is a side view of the embodiment shown in Fier. 1;

F1g. 3 cf the drawing is a. front view Illustrat- Ing a. second embodiment cf this invention;

Fig. 4 is a side view cf the embodiment shown in Fig. 3;

Fig. 5 of the drawing is a top v1ew cf a third embodiment 01 this invention; and

Fig. 6 is a view from a, direction indicated by arrows 66 In F1g. 5.

screw member I.

Referring to Fig. 1 of the draw1'ng thele is shown a portion of a chassis or base plate l to which is attached a right angle plate member 2 by the nut and holt assemblies 3 and 4. The element supported froin the right angle member 2 is illustrated, by way of example, as a coudenser 5 of well-known configuration which is bolted to the vertical portlon cf plate 2 by a There 15 provided a cam or eccentric 8 adapted to be tightened into the position shown in Fig. 1 by a screw III.

'I'he method 01 assembly of the apparatus shown in Flg. 1, consists of attaching condenser 5 t 0 the upright portion of plate 2 by tightening the screw I and thereby drawing condenser 5 tightly the right angle member 2 in such a position. that one of the flat surfaces of comdenser 5 bears again st the horizontal surface of right angle plate 2 as shown in Fig. 1. 'Ihe support is rendered vibrationproof by rotating the cam or eccntric 8 toward condenser 4 unti1 nondenser 5 bears solidly again5t the horizontal surface of plate 2. By tightening the screw I0 to malntain cand 8 in the position shown in Fig. 1, there is maintained such a pressure on condenser 5 that a transverse force :Is imparted to screw I, thereby preventing it from loosening and the 1ower surface of condenser 5 is maintained in solid relation with respect to the horizontal surfa.ce 01 right angle plate 2. 'Ihus, regardless of the degree of vibration to which chassis I may be subjected, condenser 5 can not have any motion with respect to chassis I or right angle platze 2.

The preferred' embodiment Of the invention 15 I illustrated in Fig. 3 Whichis similar to Fig. 1 in that condenser 5 is supported on a right angle platze member 2 which is attached to Chassis l.

'Ihe assembly 1s rendered vibration proof by means of a somewhat resilient lug I2 which is cu1; out of the upright portlori cf plate 2 and bent outwardly therefrom to such a positio n that lt 15 substantially at right angles to plate 2. Hewever, the angle cf lug I2 with respect to plate 2 should be such that it will not; permit perfect allgnment of the threaded hole in oondenser 5 with screw I. Therefore, condenser 5 mus1; be forced lnto alignment against -resilient lug I2 wh ereby screw l may be screwed into the thxeaded hole in condepser 5. When screw 1 is tlghtened I;o draw condenser 5 to its proper position lug I2 i-mparts a transverse force to condenser 5 and screw I. 'Ihus, by adjusting the angle o1 lug I2 with respect to plate 2, any desired degree of transverse pressure may be brought'to bear an condenser 5 whereby lt rests flrmly an the horizontal surface of platze 2 and screw I is bound o1 jammed in the tight position.

Fig. 5 illustrates a third embodiment of the invention including chassis member I to Which the condenser element 5 is fastened directly by screw I. In assembling this modification of the invention, condenser 5 is placed on Chassis I With surface 9 of condenser 5 in contact with the surface of post II. For rendering this assembly vibrationproof, there is provided a tapered element I3 which is bolted to chassis I by holt and nut assembly I4. The tapered element I3 is bolted to chassis I in such relation to condenser 5 that tapered element I3 positively engages sondenser 5 and imparts pressure thereto. Thus, conderxser 5 bears firmly on p0st I l 130 bind screw I and prevent any loosening of screw I or of condenser 5.

This invention has been illustrated as it may be applied to a suppori; for a condenser element bilo it Will be -obvious to those skilled in the art that any other circuit element, such as a resistor or coil, may be provided With a Vibrationproof support so I0ng as i1; is supportecl in such a manner that one of Its surfaces bears a%ainst the support und another of its surfaces bears against a. resilienfi or adjustable element whereby a transverse force may be applied so prevent any loosening of the suppsrting screw er the entire element. It will also be obvious to those skilled in the art that there are many other possible coustructions of the supporting element which will accomplish the desired resu1t. There is, for instance, in the case of the embodiment illustrated In Fig. 3, a possibility of substituting for- 111g I2 a bent portion of the horizontal part of plate 2 or a bent portion of the vertical part of platze 2. Ihe desirability of whatever modificatiou 0f the invention may be used depends upon fhe con' figuratlon of the supported element and the couditions under which the chassis is to be used.

While there has been described What is -at present con.sidered the preferred embodiment of the invent-ion, it will be obvious to those skilled In the art that various changes and modifications may be made therein without departing from' the invention, and it is, therefore, aimed in the appended claims to cover all such changes and modifications as fa11 within the true spirit and scope of ehe invention.

I claim:

1. A support adapted to withstand vibratory or jarring motions comprising a main supporting member havi ng a pair of surfaces a-t right angles to one another an adjustable fastening element in one of said surfaces for securing a supported membtr thereto and means adjacer'it said fasten ing element and in position to engage said supp0rted member for imparting a transverse force to said fastening element and said supported member thereby to force gaid supported member into engagement With the other of said surfaces and -prevent said fastening element from Changing its adjustment under the influence 0f vibratory anti jarring motions.

2. A support adapted to withstand vibratmry or jarring motions comprising a main supporting member having a pair of surfaces at right angles 120 one another, an adjustable fastening element in one of said surfaces for securing a supported member thereto and rsilient means adjacent said fastening element and in position engage said supported member for irnparting a transverse f0rce 00 sa1'd fastening element and said supp0rted member thereby to force said supported member into engagement with the other of said surfaces and prevent said fastening element from changing its adjustment under the influence of vibratory and jariing motions.

3. A support adapted to withstand. vibratory o1 jarring motions comprising a main supporting member having a. painof surfaces at right -angles to one another, an adjustable fastening element in one of sa.id surfaces for securing a supported member thereto a.nd tapered means adjacent said. fastening element and in position to engage Said supported member for imp&rting a transverse force to saicl fastening element and said supported member thereby to force said supported member into engagement with the other of said surfaces and prevent: said Iastening element f1om changing its adjustment under the influence 0f vibratory a.nd jarring moln'ons.

4. A Support adapted to withstand vibratory or jarring motions comprising a main supp01=ting member having a pair of surfaces at right angles t0 one another, an a.djustable fastening element in one of said surfaces for securing a supported member thereto and eccentri means adjacent said fastening element and in position to engage said supponted member for imparting a transverse force to said fastening element and said supported member thereby to fo'rce said supported member into engagement With the other of said surfaces and prevent said fastening element from changing its adjustment under the influence nf vibratory and jarring motions.

' WILLIAM G. LEICHNER. 

